CN109470280A - A kind of highly reliable contactless position is close to measuring device - Google Patents
A kind of highly reliable contactless position is close to measuring device Download PDFInfo
- Publication number
- CN109470280A CN109470280A CN201811265847.7A CN201811265847A CN109470280A CN 109470280 A CN109470280 A CN 109470280A CN 201811265847 A CN201811265847 A CN 201811265847A CN 109470280 A CN109470280 A CN 109470280A
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- Prior art keywords
- position switch
- magnet
- fixed contact
- contact
- connecting shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The present invention provides a kind of highly reliable contactless positions close to measuring device, the device realizes that metal parts approximated position is measured based on magnetic force Self-resetting and magnetic force location detection methods, it can be realized the highly integrated, hermetically sealed of sensor, have the characteristics that high temperature resistant, resistance to ray, vibration resistance, functional reliability is high, the characteristics of long service life, highly reliable position measurement can be provided for Valve position switch, automatic door switch and the other similar purposes in industry, significantly improve industry security level.
Description
Technical field
The invention belongs to position measurement technique fields, and in particular to a kind of pair of mechanical device is closely located to state and carries out in real time
The device of monitoring.
Background technique
Being closely located to state measurement is commonly used a kind of mechanical value measuring in industry, for example common valve location is opened
It closes, moving component extreme position protective switch, it is particularly significant to equipment operational safety.Existing frequently-used is closely located to state measurement
Method and apparatus relies on complicated circuit, such as the switch or photoelectricity of the valve position switch based on Hall effect, current vortex mostly
All there is system complex in switching mode, the switch based on these principles, the problem not high to environment resistance, reliability is insufficient, special
It is not that condition can not reliably working under high temperature, ray, high humidity or liquid.It is commonly used in due to being closely located to state measuring device
The key control parameter of extreme position protection or state conversion, if its failure may cause equipment fault or system enters danger
State, therefore, develop a kind of high reliablity, environment resistance it is strong to be closely located to measuring device very necessary.
Summary of the invention
In view of the defects existing in the prior art, the present invention provides a kind of highly reliable contactless positions fills close to measurement
Set, due to it is existing to checking device be substantially that the permeability magnetic materials such as metal are made, the device be based on magnetic force Self-resetting and
Magnetic force location detection methods, structure is simple, does not need external power supply, and reliable operation, environment resistance is strong, solves the prior art
The problem of, and device provided by the invention is all integrated in one, makes due to itself not having to extra power, induction and output
With simple, all DCS(Digitizing And Control Unit) can directly use, have the advantages that it is highly integrated, further, by
In utilizing magnetic force principle, magnetic field can smoothly penetrate shell, measuring device can be made hermetically sealed, realize contactless measurement.
The present invention is realized by following technological means:
A kind of highly reliable contactless position is close to measuring device, including position switch fixed contact A, position switch activity touching
Point, position switch fixed contact B, the first magnet, driving plate, connecting shaft, the second magnet, shell, in which:
Connecting shaft is vertically-mounted inside the shell, and the second magnet is mounted on the bottom end of connecting shaft, positioned at the top of the bottom surface of shell；It drives
Movable plate, position switch armature contact be sequentially arranged in connecting shaft, the top of the second magnet, and driving plate, position switch activity
Contact, the second magnet relative position are fixed, and can be moved together along the axial direction of connecting shaft；The position switch fixed contact A,
Position switch fixed contact B and the first magnet are fixedly mounted on the inner wall of shell, position switch fixed contact A, position switch
Fixed contact B be separately positioned on position switch armature contact above and below, and position switch armature contact respectively with position
Switch fixed contact A, position switch fixed contact B are having overlapping perpendicular to the projection in connection axis direction, and position switch is solid
Fixed contact A, position switch fixed contact B, position switch armature contact have contact detection function, so that position switch moves contacts
When being moved upwards along the axial direction of connecting shaft with position switch fixed contact A generation contact and issue activation signal, along
It is contacted when the axial direction of connecting shaft moves downward with position switch fixed contact B generation and issues activation signal；
First magnet is in the top of the driving plate；
One of them is permanent magnet for first magnet and driving plate, another is permeability magnetic material, or is permanent magnet, permanent magnetism
The pole orientation of iron and the axial direction of connecting shaft are consistent, and when being permanent magnet, pole orientation is consistent, in the axial direction of connecting shaft
Attracting each other on direction；Second magnet is permanent magnet, and pole orientation is consistent with the axial direction of connecting shaft；
The distance between the position switch fixed contact A and position switch armature contact less than the first magnet and driving plate it
Between distance, the distance between the described position switch armature contact and position switch fixed contact B are less than the second magnet and outer
The distance between bottom surface of shell.
Further, the position switch fixed contact A, position switch armature contact, position switch fixed contact B are
Conductive electrode, so that position switch armature contact moves upwards Shi Keyu position switch along the axial direction of connecting shaft and fixes
Contact A generate contact and be connected, moved downward along the axial direction of connecting shaft Shi Keyu position switch fixed contact B generation connect
It touches and is connected.
Further, second magnet is circle；The driving plate and position switch armature contact are circle, are hung down
Directly it is centrally mounted in connecting shaft；Position switch fixed contact A, position switch fixed contact B and first magnet is ring
Shape is fixedly mounted inside the shell, vertical with the inner wall of shell.
Further, the shell is un-conducted magnetic material.
Further, the connecting shaft is un-conducted magnetic material, and moves contacts and insulate with the position switch.
Further, the connecting shaft is set as hollow.
The present invention has following technical effect that
(1) highly reliable contactless position provided by the invention is visited close to measuring device based on magnetic force Self-resetting and magnetic force position
Survey method, structure is simple, does not need external power supply, and environment resistance is strong, has the characteristics that high temperature resistant, resistance to ray, vibration resistance, and
Functional reliability is high, long service life.
(2) device provided by the invention is all integrated in one, uses letter due to itself not having to extra power, induction and output
Single, all DCS(Digitizing And Control Unit) it can directly use, have the advantages that highly integrated.
(3) due to utilizing magnetic force principle, magnetic field can smoothly penetrate shell, can make measuring device device provided by the invention
It is hermetically sealed, realize contactless measurement.
Detailed description of the invention
Fig. 1 is a kind of highly reliable contactless position close to measuring device schematic diagram,
In figure: 1- position switch fixed contact A, 2- position switch armature contact, the first magnetic of 3- position switch fixed contact B, 4-
Body, 5- driving plate, 6- shell, 7- connecting shaft, the second magnet of 8-, 9- component to be checked.
Specific embodiment
This part will in conjunction with attached drawing the technical solution of the present invention is further explained with explanation.It may be noted that
It is that embodiments of the present invention are not limited to following embodiment.
Embodiment 1
As shown in Figure 1, a kind of highly reliable contactless position is close to measuring device, it is characterised in that: fixed including position switch
Contact A 1, position switch move contacts 2, position switch fixed contact B3, the first magnet 4, driving plate 5, connecting shaft 7, the second magnetic
Body 8, shell 6, in which: shell 6 is tubular, in the present embodiment using cylindrical shape, connecting shaft 7 is vertically-mounted, it is radially fixed
In shell 6；Second magnet 8 is circular permanent magnet, and pole orientation is consistent with the axial direction of connecting shaft 7, is mounted on connecting shaft 7
Bottom end, positioned at the top of the bottom surface of shell 6, it is parallel with the bottom surface of shell 6 and have a distance with the bottom surface of shell 6；Driving plate 5
With position switch armature contact 2 for circle, successively vertical center be mounted in connecting shaft 7, the top of the second magnet 8, and drive
The relative position that plate 5 and position switch move contacts between the 2, second magnet 8 is fixed, and can be transported together along the axial direction of connecting shaft 7
Dynamic, sleeve fashion can be used in concrete methods of realizing, i.e., sleeve is arranged in connecting shaft 7, and driving plate 5, position switch activity are touched
Point 2 and the second magnet 8 are mounted on sleeve, can be along the axial associated movement of connecting shaft 7；Either in the prior art other
Achievable mode, such as be mounted in connecting shaft 7 and sliding rail is set, in driving plate 5, position switch armature contact 2 and the second magnetic
The sliding block matched is set on body 8, it can sliding axially along connecting shaft 7；Or the side of installation pilot hole can also be passed through
Formula is realized；Or driving plate 5, position switch armature contact 2 and the second magnet 8 are fixedly mounted in connecting shaft 7, connecting shaft
7 are set as to slide axially in shell 6, and when connecting shaft slides axially in shell 6, driving plate 5, position can be realized
Switch activity contact 2 and the second magnet 8 move while on the axial direction of connecting shaft 7；
Position switch fixed contact A1, the position switch fixed contact B3 and the first magnet 4 is annular, is fixedly mounted outside
Vertical with the inner wall of shell 6 in shell 6, position switch fixed contact A1, position switch fixed contact B3 are separately positioned on position and open
It closes above and below armature contact 2, first magnet 4 is in the top of the driving plate 5.
One of them is permanent magnet for first magnet 4 and driving plate 5, another is permeability magnetic material: when the first magnet 4 is permanent magnetism
When body, driving plate 5 is permeability magnetic material, and the pole orientation of the first magnet 4 is consistent with the axial direction of connecting shaft 7, alternatively, the first magnetic
Body 4 is permeability magnetic material, and driving plate 5 is permanent magnet, and the pole orientation of driving plate 5 is consistent with the axial direction of connecting shaft 7, both
In the case of, the first magnet 4 and driving plate 5 all have the attraction on the axial direction of connecting shaft 7.
Position switch armature contact 2 respectively with position switch fixed contact A1, position switch fixed contact B3 perpendicular to
Projection on 7 direction of connecting shaft has overlapping, and position switch armature contact 2, position switch fixed contact A1, position switch are solid
Fixed contact B3 is conductive electrode, using the good copper of electric conductivity at.When position switch armature contact 2 is along connecting shaft
7 can be with position when moving axially upwards Shi Keyu position switch fixed contact A1 generation contact, moving axially downwards along connecting shaft 7
It sets switch fixed contact B3 and generates contact, to generate contact type on-off model.
The distance between the position switch fixed contact A1 and position switch armature contact 2 are less than 4 He of the first magnet
The distance between driving plate 5, the position switch move contacts the distance between 2 and position switch fixed contact B3 less than the
The distance between two magnets 8 and the bottom surface of shell 6；
The shell 6 is un-conducted magnetic material, and the connecting shaft 7 is un-conducted magnetic material, selects nonmagnetic ceramic materials, in order to avoid
Interference is generated to the magnetic part of the present apparatus, reduces technical effect of the invention；And connecting shaft 7 and the position switch are movable
It insulate contact 2；For the responding ability for improving device, connecting shaft 7 is as light as possible under the premise of meeting intensity requirement, therefore at this
It is set as hollow in embodiment, can also further mitigate the weight of connecting shaft 7 by selecting light material.
When the highly reliable contactless position is detected close to measuring device:
Component 9 to be checked is to be equipped with ferrimagnet on ferrimagnet or component to be checked 9, due to the magnetic pole side of the second magnet 8
To consistent with the axial direction of connecting shaft 7, i.e., the second magnet 8 has attraction on the axial direction of connecting shaft 7 with component 9 to be checked
Power, when component 9 to be checked is when the axial direction of connecting shaft 7 is far from device, once distance is greater than measurement limit value, the second magnet 8 with
The attraction of component 9 to be checked less than the first magnet 4 to the attraction of driving plate 5, at this point, in the attraction masterpiece of first this magnet 4
Under, driving plate 5 drives position switch armature contact 2 and the second magnet 8 to move together, until setting switch fixed contact A1 and position
The close contact of switch activity contact 2 is set, the electrode conduction for setting switch fixed contact A1 and position switch armature contact 2, output are made
One on-off model indicates component 9 to be checked not in measurement position；
When axial direction approaching device of the component 9 to be checked in connecting shaft 7, once distance is less than measurement limit value, 8 He of the second magnet
Attraction between component 9 to be checked is greater than the first magnet 4 to the attraction of driving plate 5, at this point, in the second magnet 8 and portion to be checked
Under the mutual attractive force effect of part 9, the second magnet 8 drives position switch armature contact 2 and driving plate 5 to move together, Zhi Daowei
It sets switch activity contact 2 and position switch fixed contact B3 is in close contact, fix position switch armature contact 2 and position switch
The electrode conduction of contact B3, exporting an on-off model indicates that component 9 to be checked reaches measurement position.
The measurement limit value is calculated according to calculation of magnetic force principle, combined magnetic field intensity, material, size.
The position switch fixed contact A1, position switch move contacts 2, position switch fixed contact B3, the first magnetic
Body 4, driving plate 5, the second magnet 8 are not limited to circle or annular in the present embodiment, but are provided in round or annular is most
Good embodiment because annular and circular design be independent of setting angle, even if rotate can also with reliably working, in addition,
Annular and circle are conducive to uniform force, prevent uneven wear, can be improved the reliability and durability of the present apparatus.
Embodiment 2
The present embodiment difference from example 1 is that:
The position switch fixed contact A1, position switch armature contact 2, position switch fixed contact B3, the first magnet 4,
Driving plate 5, the second magnet 8 are not necessarily circle or annular described in embodiment 1, as long as in the first magnet 4 and driving plate 5
Permanent magnet and the second magnet 8 pole orientation it is consistent with the axial direction of connecting shaft 7.Dimensionally, if first
Magnet 4 can generate the attraction on the axial direction of connecting shaft 7 with driving plate 5, the second magnet 8 with component 9 to be checked
It can.In the present embodiment, the first magnet 4 is selected hollow rectangular or oval, and driving plate 5, the second magnet 8 are selected rectangular or ellipse
It is round.The position switch fixed contact A1, position switch armature contact 2, position switch fixed contact B3 are also not necessarily
It is annular, as long as i.e. position switch activity contact 2 is moving axially upwards Shi Keyu position switch fixed contact along connecting shaft 7
A1 generates contact, moves axially downwards Shi Keyu position switch fixed contact B3 generation contact along connecting shaft 7.In this reality
It applies in example, the position switch fixed contact A1, position switch armature contact 2, position switch fixed contact B3 are three and hang down
Directly in the straight-bar of the inner wall of shell 6, three straight-bars are in the same plane or position switch armature contact 2 respectively with it is described
Position switch fixed contact A1, position switch fixed contact B3 it is arranged in a crossed manner, technical effect of the invention may be implemented.
It should be pointed out that the position switch fixed contact A1, position switch armature contact 2, position switch are fixed
Contact B3, the first magnet 4, driving plate 5, the second magnet 8 are again not limited to the shape in the present embodiment, other irregular shapes
As long as meeting the principle pointed out in the present embodiment, can use.
Embodiment 3
The present embodiment difference from example 1 is that: the position switch fixed contact B3, position switch armature contact
2 and position switch fixed contact A1 is having overlapping perpendicular to the projection in connecting shaft 7, but is not necessarily conductive electrode, can be in position
Switch fixed contact B3, position switch move contacts and install contact sensor on 2 and position switch fixed contact A1, when position is opened
It closes armature contact 2 and position switch fixed contact B3, position switch fixed contact A1 is generated when contacting, i.e., capable of emitting signal indicates
Whether component 9 to be checked reaches measurement position.Sensing contact technology in the prior art is used equally for the present embodiment.
Embodiment 4
The present embodiment difference from example 1 is that:
First magnet 4 and driving plate 5 are permanent magnet, and the pole orientation of two permanent magnets is consistent, and the axial direction with connecting shaft 7
Direction is consistent, and the first magnet 4 and driving plate 5 are attractive on 7 axial direction of connecting shaft at this time.
First magnet 4 and driving plate 5 are having overlapping perpendicular to the projection in connecting shaft 7, at this time the first magnet 4 and driving plate
Attraction between 5 is larger, and technical effect can be better achieved.
To sum up, the present invention realizes metal parts approximated position by using magnetic force Self-resetting and magnetic force location detection methods
Measurement, can be realized the highly integrated, hermetically sealed of sensor, has the characteristics that high temperature resistant, resistance to ray, vibration resistance, reliable operation
Property it is high, the characteristics of long service life, can be mentioned for Valve position switch, automatic door switch and the other similar purposes in industry
It is measured for highly reliable position, significantly improves industry security level.
Claims (6)
1. a kind of highly reliable contactless position is close to measuring device, it is characterised in that: including position switch fixed contact A(1),
Position switch move contacts (2), position switch fixed contact B(3), the first magnet (4), driving plate (5), connecting shaft (7), second
Magnet (8), shell (6), in which:
Connecting shaft (7) is vertically installed in shell (6), and the second magnet (8) is mounted on the bottom end of connecting shaft (7), is located at shell (6)
Bottom surface top；Driving plate (5), position switch armature contact (2) be sequentially arranged on connecting shaft (7), the second magnet (8)
Top, and driving plate (5), position switch armature contact (2), the second magnet (8) relative position are fixed, it can be along connecting shaft (7)
Axial direction move together；The position switch fixed contact A(1), position switch fixed contact B(3) and the first magnet (4) it is solid
Dingan County is on the inner wall of shell (6), position switch fixed contact A(1), position switch fixed contact B(3) be respectively set it is in place
Set above and below switch activity contact (2), and position switch armature contact (2) respectively with position switch fixed contact A
(1), position switch fixed contact B(3) there are overlapping, and the fixed touching of position switch perpendicular to the projection on connecting shaft (7) direction
Point A(1), position switch fixed contact B(3), position switch armature contact (2) have contact detection function；
First magnet (4) is in the top of the driving plate (5)；
One of them is permanent magnet to first magnet (4) and driving plate (5), another is permeability magnetic material, or is permanent magnetism
Iron: the pole orientation of permanent magnet is consistent with the axial direction of connecting shaft (7), and when being permanent magnet, the magnetic pole of two permanent magnets
Direction is consistent；Second magnet (8) is permanent magnet, and pole orientation is consistent with the axial direction of connecting shaft (7)；
The position switch fixed contact A(1) and position switch armature contact the distance between (2) less than the first magnet (4)
The distance between driving plate (5), the described position switch armature contact (2) and position switch fixed contact B(3) between away from
From the distance between the bottom surface less than the second magnet (8) and shell (6).
2. a kind of highly reliable contactless position as described in claim 1 is close to measuring device, it is characterised in that: the position
Set switch fixed contact A(1), position switch armature contact (2), position switch fixed contact B(3) be conductive electrode.
3. a kind of highly reliable contactless position as claimed in claim 1 or 2 is close to measuring device, it is characterised in that: described
The second magnet (8) be circle；The driving plate (5) and position switch armature contact (2) are circle, and vertical center is mounted on
In connecting shaft (7)；The position switch fixed contact A(1), position switch fixed contact B(3) and the first magnet (4) be ring
Shape is fixedly mounted in shell (6), vertical with the inner wall of shell (6).
4. a kind of highly reliable contactless position as claimed in claim 3 is close to measuring device, it is characterised in that: described is outer
Shell (6) is un-conducted magnetic material.
5. a kind of highly reliable contactless position as claimed in claim 2 or 4 is close to measuring device, it is characterised in that: described
Connecting shaft (7) be un-conducted magnetic material, and with described position switch armature contact (2) insulation.
6. a kind of highly reliable contactless position as described in claim 1 is close to measuring device, it is characterised in that: the company
Spindle (7) is set as hollow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811265847.7A CN109470280A (en) | 2018-10-29 | 2018-10-29 | A kind of highly reliable contactless position is close to measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811265847.7A CN109470280A (en) | 2018-10-29 | 2018-10-29 | A kind of highly reliable contactless position is close to measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109470280A true CN109470280A (en) | 2019-03-15 |
Family
ID=65666816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811265847.7A Pending CN109470280A (en) | 2018-10-29 | 2018-10-29 | A kind of highly reliable contactless position is close to measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109470280A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3789333A (en) * | 1972-09-27 | 1974-01-29 | Kurpanek W H | Magneto-motive bistable switching devices |
| CN2123816U (en) * | 1992-03-04 | 1992-12-02 | 郭晓岚 | Contactless stroke switch |
| CN1067330A (en) * | 1992-05-17 | 1992-12-23 | 李青 | Electric appliance with magnetic controlled isolating switch |
| CN2141122Y (en) * | 1992-10-14 | 1993-08-25 | 李青 | Flame-proof switch |
| CN2532577Y (en) * | 2002-03-22 | 2003-01-22 | 李荣华 | NS magnetic approach switch |
-
2018
- 2018-10-29 CN CN201811265847.7A patent/CN109470280A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3789333A (en) * | 1972-09-27 | 1974-01-29 | Kurpanek W H | Magneto-motive bistable switching devices |
| CN2123816U (en) * | 1992-03-04 | 1992-12-02 | 郭晓岚 | Contactless stroke switch |
| CN1067330A (en) * | 1992-05-17 | 1992-12-23 | 李青 | Electric appliance with magnetic controlled isolating switch |
| CN2141122Y (en) * | 1992-10-14 | 1993-08-25 | 李青 | Flame-proof switch |
| CN2532577Y (en) * | 2002-03-22 | 2003-01-22 | 李荣华 | NS magnetic approach switch |
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Application publication date: 20190315 |
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